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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/test_runner/mock_web_midi_accessor.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/macros.h"
#include "base/strings/stringprintf.h"
#include "components/test_runner/test_interfaces.h"
#include "components/test_runner/test_runner.h"
#include "components/test_runner/web_test_delegate.h"
#include "components/test_runner/web_test_runner.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/modules/webmidi/WebMIDIAccessorClient.h"
using midi::mojom::PortState;
using midi::mojom::Result;
namespace test_runner {
namespace {
constexpr unsigned char kSysexHeader[] = {0xf0, 0x00, 0x02, 0x0d, 0x7f};
constexpr unsigned char kSysexFooter = 0xf7;
constexpr size_t kSysexMinimumLength =
arraysize(kSysexHeader) + sizeof(kSysexFooter) + 1;
bool isSysexForTesting(const unsigned char* data, size_t length) {
// It should have five bytes header, one byte footer, and at least one byte
// payload.
if (length < kSysexMinimumLength)
return false;
if (memcmp(data, kSysexHeader, arraysize(kSysexHeader)))
return false;
return data[length - 1] == kSysexFooter;
}
} // namespace
MockWebMIDIAccessor::MockWebMIDIAccessor(blink::WebMIDIAccessorClient* client,
TestInterfaces* interfaces)
: client_(client),
interfaces_(interfaces),
next_input_port_index_(0),
next_output_port_index_(0),
weak_factory_(this) {}
MockWebMIDIAccessor::~MockWebMIDIAccessor() {
}
void MockWebMIDIAccessor::startSession() {
// Add a mock input and output port.
addInputPort(PortState::CONNECTED);
addOutputPort(PortState::CONNECTED);
interfaces_->GetDelegate()->PostTask(base::Bind(
&MockWebMIDIAccessor::reportStartedSession, weak_factory_.GetWeakPtr(),
interfaces_->GetTestRunner()->midiAccessorResult()));
}
void MockWebMIDIAccessor::sendMIDIData(unsigned port_index,
const unsigned char* data,
size_t length,
double timestamp) {
// Emulate a loopback device for testing. Make sure if an input port that has
// the same index exists.
if (port_index < next_input_port_index_)
client_->didReceiveMIDIData(port_index, data, length, timestamp);
// Handle special sysex messages for testing.
// A special sequence is [0xf0, 0x00, 0x02, 0x0d, 0x7f, <function>, 0xf7].
// <function> should be one of following sequences.
// - [0x00, 0x00]: Add an input port as connected.
// - [0x00, 0x01]: Add an output port as connected.
// - [0x00, 0x02]: Add an input port as opened.
// - [0x00, 0x03]: Add an output port as opened.
if (!isSysexForTesting(data, length))
return;
size_t offset = arraysize(kSysexHeader);
if (data[offset++] != 0)
return;
switch (data[offset]) {
case 0:
addInputPort(PortState::CONNECTED);
break;
case 1:
addOutputPort(PortState::CONNECTED);
break;
case 2:
addInputPort(PortState::OPENED);
break;
case 3:
addOutputPort(PortState::OPENED);
break;
default:
break;
}
}
void MockWebMIDIAccessor::addInputPort(PortState state) {
std::string id =
base::StringPrintf("MockInputID-%d", next_input_port_index_++);
client_->didAddInputPort(blink::WebString::fromUTF8(id),
"MockInputManufacturer", "MockInputName",
"MockInputVersion", state);
}
void MockWebMIDIAccessor::addOutputPort(PortState state) {
std::string id =
base::StringPrintf("MockOutputID-%d", next_output_port_index_++);
client_->didAddOutputPort(blink::WebString::fromUTF8(id),
"MockOutputManufacturer", "MockOutputName",
"MockOutputVersion", state);
}
void MockWebMIDIAccessor::reportStartedSession(Result result) {
client_->didStartSession(result);
}
} // namespace test_runner
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